Hawaiiguy1018
Recruit
- Joined
- May 25, 2023
- Messages
- 1
Hello everyone. My buddy recently got a boat with a 1977 Johnson 70 Evinrude on it. Recently, the boat has been running okay out of water with muffs on, but dies when putting into gear on the water. My first thought was it’s running on 2 or less cylinders, so I check. Sure enough, chamber 3 is dead. I pulled the wire on 3 while boat was running, and no change in idle. So then I swapped 2 and 3’s wires and still the same problem. After that I swapped 2 and 3’s plugs, and 3 was still dead. I did a compression test on all 3. 1 was 132psi, 2 was 120 psi, and 3 was 132psi. I’m not very familiar with outboard engines so any help would be appreciated. Thanks for looking. Also attaching a video of cylinder 3 sparking when touched with pliers